TB 9-6625-1995-24
(37) Adjust R155 (fig. 2) until TRIG'D light just goes out.
indication.
(38) Adjust R155 (fig. 2) cw until waveform is stable. Record multimeter indication.
(39) Adjust R155 (fig. 2) for the average of multimeter indications recorded in (37)
and (38) above.
(40) Connect delay line cable J170 (fig. 2) and disconnect multimeter.
(41) Adjust MAIN TRIGGERING LEVEL control to 0.
(42) Adjust R25 (fig. 2) for a stable display at graticule centerline (TRIG'D light on).
(43) Adjust R125 (fig. 2) for a sweep trigger point at approximately 0.5 division from
bottom of waveform as MAIN TRIGGERING LEVEL control is rotated through negative
( ) portion of its range.
(44) Press MAIN TRIGGERING SOURCE EXT pushbutton. Adjust R59 (fig. 2) for
a sweep trigger point at graticule centerline.
(45) Move connection from MAIN TRIG IN to DLY'D TRIG IN.
(46) Press MAIN TRIGGERING SOURCE INT pushbutton and adjust delayed
triggering LEVEL control to 0.
(47) Adjust R225, R245, and R325 (fig. 2) to midrange.
(48) Adjust R345 and R355 (fig. 2) fully cw.
(49) Repeat (6) and (7) above.
(50) Adjust R355 (fig. 2) ccw until intensified zone moves to the right and disappears.
(51) Connect multimeter HI to TP345 (fig. 2) and LO to chassis ground.
indication.
indication.
(54) Adjust R345 (fig. 2) for the average of multimeter indications recorded in (52)
and (53) above. Delayed sweep should be visible.
(55) Disconnect multimeter HI from TP345 (fig. 2) and connect multimeter HI to
TP355 (fig. 2). Record multimeter indication.
indication.
(57) Adjust R355 (fig. 2) for the average of multimeter indications recorded in (55)
and (56) above.
(58) Adjust R245 (fig. 2) for a delayed sweep trigger point at graticule centerline.
(59) Adjust R325 (fig. 2) for a delayed sweep trigger point at approximately 0.5
division from bottom of waveform as delayed triggering LEVEL control is rotated through
negative ( ) portion of its range.
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